54mm throttle bodies and packages The throttle bodies have been bored over, and the half the shaft is mill off in the chamber for less obstruction to flow. Low profile throttle plate bolts are thread locked in place. We offer these: -throttle bodies only $300 -throttle bodies with genuine Nissan gaskets $317 -throttle bodies with gaskets and abrasive flapper sanding wheel. $330 -prices are shipped in the USA We found these 2 inch sanding wheels allow you to port match the plenum(upper intake manifold)cleanly quickly and with ease. We will port patch your plenum if you bring in the plenum and or vehicle. We ill offer $425 on car installation at our shop. Flow Results: 50mm 350 CFM (stock) 54mm 468 CFM (stock machined over 4.5mm with shaft milling) 58mm 484 CFM (z1) There is a 50$ core charge. These fit 90-95 obd1 engines These Fit Turbo and nonturbo 300zx These do fit Infiniti J30 engines Yes we DO have a small stock oF 1996 obd2 versions which have a unique TPS sensor. Some J30 models may also you these obd2 sensor